Home / 72,549,172.39-100,117,169.07-39,509,972.94

Finding the Fourth Proportional to 72,549,172.39, 100,117,169.07 and 39,509,972.94

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Solution

The fourth proportional to 72,549,172.39, 100,117,169.07 and 39,509,972.94 is: 54,523,387.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,549,172.39 : 100,117,169.07 = 39,509,972.94 : x
  2. Step 2: Convert to fraction form
    72,549,172.39/100,117,169.07 = 39,509,972.94/x
  3. Step 3: Cross multiply
    72,549,172.39x = 100,117,169.07 × 39,509,972.94
  4. Step 4: Simplify right side
    72,549,172.39x = 3,955,626,640,587,555
  5. Step 5: Solve for x
    x = 3,955,626,640,587,555/72,549,172.39
  6. Step 6: Final answer
    x = 54,523,387.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.